Reamer



D. 5. FOX

REAMER April 14, 1925. 1,533,314

Filed Aug. 4, 1921 1 l INVEN TUE;

ATTDF'NE v.

, UNITED sTATEs PATENT 'OFFICE.

.IDANIEL S. FOX, IVORYTO'N, CONNECTICUT.

REAMER.

Application filed August 4 To all whom it may concern:

Be it known that I, DANIEL S. Fox, a citizen of the United States, and a resident I of Ivoryton, in the county'of Middlesex and 'State of Connecticut, have invented a new and improved Reamer, of which the follow ing is a specification.

My invention relates to that class of tools employed for increasing the size of a hole or for smoothing its inner surface, and an object of myinvention, among others, is to provide a tool of this class that shall be simple in its construction and particularly eflicient in its operation;

A form of rcamer embodying my invention and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawings, in

which Figure 1'is a side view of my improved reamer. V Y j r Figure 2 is an end view of the same. Figure 3 is a view in central longitudinal section through my improved reamer.

Figure dis a view in cross section through the sameon plane denoted by dotted line c l of Figure 1.-

In the accompanying drawings the numeral 5 indicates the body of my improved. ieamer that is composed of any suitable m tal and that is preferably round as to its general shape in cross section. A number of grooves 6 are formed in the outer surface of the body, extending lengthwise thereof,

preferably for its full length, these grooves being arranged to receive reaming cutters 7 and clamps 8 therefor.

This improved reamer is especially designed to receive reaming cutters or reamers of triangular shape in cross section, and the "grooves are formed to receive such triangular shaped reamers in the preferred form of construction, each groove being arranged to receive two of the reaming cutters.

In the special arrangement herein shown and described I provide three of the grooves 6 evenly spaced about the outer surface of the body and arranged to receive the reaming cutters at opposite sides, the width of these grooves being such, as comparedwith the circumference that the six tools will be evenly spaced about the circumference of the body.

.The grooves-6 and the clamps 8 are so ,"1921. Serial No. 489,718.

formed that triangularly-shaped cutter receiving recesses 9-10 are formed in each groove 6. In efl'ecting this purpose in the structure herein shown the grooves 6 are each formed with oppositely inclined surfaces arranged in substantially parallel relation whereby a tool receiving lip 11 is located at one side of the groove, which lip, however, does not appear at the opposite side of the groove. This lip receives one of the sides of a triangularly shaped cutter '7 and a beveled tool receiving edge 12 on a clamp 8 receives the opposite beveled edge of the triangularly shaped tool, the cutting edge 13 of a cutter projecting beyond the edges of the lip 11 and the beveled edge 12 for cutting purposes. The lip on the body and on the clamp form one side of the tool receiving groove, the bottom of these grooves being formed on the clamp by the edge adjacent to the lip and on the body by a part of the bottom of groove 6 adjacent to the lip.

The recess at the opposite side of a groove 6 is formed by a tool receiving clamp 8 that receives one of the beveled sides of a triangularly shaped reaming cutter, the opposite side of the recess beingformed by the beveled edge of the groove 6, all as clearly shown in Figure 4 of the drawlip 14 on a ings, a space being left between the edge of the lip 14 and the beveled edge 15 through which the cutting edge of a reaming cutter 7 projects. i

The tool clamps are each held in place as by means of a. screw or screws 16 projecting through the clamps into the body 5. The reamers project at the working end of the body and are formed with cutting edges 17, and an adjusting and holding nut 18 is mounted on a screw threaded shank 19 projecting from the opposite end of the body and formed to be received within the socket of a tool holding spindle substantially in a manner that will be readily understood.

A clearance for the chips made by the cutting tools is provided in the form of a recess at the edge of each cutting tool, such recesses 20 for one set of cutting tools being located in the clamps 8 and the recesses 21. for the other set of cutting tools being located in the outer surface of the body 5.

I claim 1. A reamer comprising a body having a groove with a fiat bottom and a sloping wall on one side at an angle to the bottom I cutti a groove with a sloping pbvid a tom and sloping walliiorminga triangularl ;Shfl-p(l-1Q6SS with narrow opening for thep hiehtihe ed e s 'i su y' hape -1. il g--l9 h and; mean i70 Securing the cla p he plac A. ream r'hhmps e e dy having a gr oize wit 1G iI Bd= P317 119 dewhl s h a flat bottom, a clamp having ts opposite edgeslinciiiied to pr oyide triangular recesses in connection with-the, 1n cl ned; Wall of the first fllgllfilQIgQCh rece a blade positioned b tween the clam and alls of the recess, and: me nse xr tain he' he c p in P a i- A homp s ne ly having a} groove; with opposite Wallssloping in: the same-direc n, a d ph v e opnh e ges s hpihe iin th am direc i ut n;

(Z on opposite te tiles-lope of the Walls 30. I V she tq h an hsadhle he heme hhs t V fsrh'epeha oh w th, he e ss Walls a 991 to r h me the W211 ihp ac A 'rea'mer. c mprisinga b dy havi g a groove with opposite Walls sloping in the sam di 'ect hn. and-i irlthi one of: h Walls forlmne'v ihpr ver ahg hs he. g e,

c amp having Opp sit e ge opi g in t e ame re on u nz'a r h iohi pp ite 'toitheslopeaof -the-iwallsof said groove, said clamp havinga; lip located on its edge op posits the hie tm e 1 p,

wa ls'pro id-ing triangular recesses for sunila y 'sha-ped;cuttingtools, and; means for 1' taini-hg'thc; cl p is PJEWQ- I 6. A reainer comprising a body, having a, grobmJe tendinglengthwise thereoi a clamp lccat dinisald green: a shaped to toolfholding recess between its oppositepedg'es, and the opposite edges of said -grooye, -a;1ip on saichbody' and a lip triangular tobl hol l on said. clamp, each to ior n one. wall of a 'l i hsi. 1 51 a '6- clamp' and a relieving lieving recess in said recess in said body, each adjacent to the mouth of a tool holding recess.

7. In a reamer in combination With a triangularly shaped cutting tool having a cuttingedge at each side corner thereof, a holder coinprisinga'body, a groove extend s along its Ou s? sh fahe' hehhse i -rm id; ve int Ph ielity eisrhwe a w. hQv-th a d he re i a p urali y of said tools. Within said grooyes'with a cutting edge oi: eachyof thesaidtoolsextend:- e h u h he sa d h. QW m h hs an in a cutting position W respect to; said holder.

A miner hi rlri ihs; a body h i groove extending longitudinally, along its outer surface the SideI allSbt the grooye being parallel and incl-ined lfelative to the hQhm: hi. e er hve h his 9 5 he' lar in cross section seated in the groove'fiae yhhs s he he li e si e lls ne. of

th sid W l shstihihhe a he a ng one of the'tools and a clamp 1n the groove having side Walls engaging the ad- 4 ih hh a ee he o s, nd a y projecting lip overlying another side of the -di slehtz h olj 9. A reainer comprising abodyhaving a groove ext d hsi hdihhl y aloha its outersuriface, the. side Walls of the groove being P31 9 f3l ihs hed sle r ii), he

bottornof: the groove, cutting toolstriangular in cross section seated 1n the groove fl a-tly engagingthe inclined one 0 5 the side Walls constituting lip overhhsi hsf n l' hlh' nh hd-v the groove haying sidewalls engaging the adjacent faces of the tools and carrying a projecting lip overlying another. side'of the ie sh o b/the PPOS Q edg s hi h clamp being p arallel; eietending at an ng eth o'dy h hi hppee dire hohs he's deWellsfhtthssr' hvh i DANIEL s1 FQX;

clamp. in 

